TW201036439A - Dual-mode television channel scanning system and method - Google Patents

Abstract

A dual-mode television channel scanning system and the method are disclosed. The system comprises a frequency setting module, a control module, and a switch module. The frequency setting module sets the scan frequency points required by a first demodulator and a second demodulator so as to allow the first demodulator and the second demodulator, according to their respective scan frequency point, to respectively demodulate the data transport streams of their own scan frequency point; the switch module outputs data transport stream to the control module; after the control module acquires the data transport stream, it determines whether the data transport stream has a data carrier, and outputs the data carrier and controls the frequency setting module for the scanning of next frequency point. This invention can allow the first and the second demodulators to conduct frequency scanning by determining whether there is data carrier or not, thereby improving the channel scanning rate of dual-mode television.

Description

201036439 VI. Description of the Invention: [Technical Field] The present invention relates to a scanning system and method for a television program listing, and more particularly to a channel scanning system and method for a dual mode television capable of saving scanning time. [Prior Art] In order to provide people with better visual enjoyment, the quality of television programs has been continuously improved, and television systems have advanced from early analog systems to today's digital systems. 〇 A digital television terrestrial multimedia broadcast (Digital)

Terrestrial Multimedia Broadcasting (hereinafter referred to as DTMB) standard is a commonly used technology for car TV, providing terrestrial digital multimedia services including HDTV, audio, video, data broadcasting and interactive multimedia. Important features include high information capacity, highly flexible operating standards, and high levels. Flexible frequency planning and coverage, support for different applications, support for multiple transport/network protocols, advanced channel coding and time domain channel estimation/synchronization schemes, and support for low-power standards for portable terminals. ^ Another China Mobile Multimedia Broadcasting (China Mobile Multimedia)

Broadcasting; hereinafter referred to as CMMB) standard, also known as the common technology of mobile TV, can support a variety of mobile terminal wireless TV systems, mainly using S-band satellite signals to achieve integrated coverage and roaming functions, its functions include satellite transmission and ground The network integrates seamless collaborative coverage, supports public services, supports multimedia services such as receiving video, audio, and data for various small receiving terminals, adopts mobile multimedia broadcast TV technology with independent intellectual property rights, and has a cryptographic authorization control management system. Support users nationwide 201036439 Tour 'and has good scalability' to adapt to the development requirements of mobile multimedia broadcast TV technology and business. However, 'the cultivation of habits can be changed between the dynasty and the evening. For the operation of digital TV, it will inevitably be compared with the analog TV era. How to improve the convenience of digital TV operation? Compared with the analog TV era, it is a common problem for every developer. From the user's point of view, the channel search time of digital TV is relatively long compared with analog TV. The known technique of processing the digital television receiving device of the aforementioned DTMBACMMB two digital television standards is to use a single tuning unit, so that the frequency tracking processing is only performed every month, and the channel search time of the single digital television standard is known. Compared with analog TV, it is relatively long. If the dual-digit TV standard cannot provide frequency analysis for each demodulation n at the same time, it will make the dual-mode TV take more time. [Description of the Invention] Therefore, the purpose of the present invention is to provide a channel scanning system and method for a dual mode television which is difficult to increase the scanning rate. Therefore, the channel scanning system of the dual mode television of the present invention cooperates with the -th solution (four) and the second demodulator, and includes a frequency setting group, a switching module and a control module. ', : the frequency setting module sets the frequency points of the first demodulator and the second demodulator, so that the first demodulator and the second demodulator respectively solve the respective frequency points according to the sweeps The poem transport stream of each scanning frequency point is called up. The switching module is configured by the first demodulator and the demodulator, and the data transmission stream demodulated by the first demodulator or the second demodulator is controlled by 201036439. The control module controls the switching module to obtain the data transmission stream demodulated by the first demodulator and the first demodulator, and determines that the data transmission stream is beneficial: the carrier controls the switching module to output the The data carrier and the control frequency port are further scanned by the group for the next frequency point.

- The channel scanning method of the dual mode television of the present invention comprises the following steps: (4) setting a scanning frequency point required by a first modulator and a second demodulator; (8) the second demodulator is simultaneously based on the respective scanning Frequency demodulation and (4) determining whether the data transmission stream is present or not - the data carrier controls the output of the data carrier and controls the J ^ collar early port and the module to perform the first demodulator and the 5th demodulator A scan of the frequency. :. The channel scanning system and method of the θ dual-mode television fully utilizes the advantages of the dual demodulator, and improves the second demodulator by judging whether or not the data is intermittently scanned by the lower-frequency point. [Embodiment] Channel scanning rate of the #制电视. The foregoing and other techniques (10), features and effects of the invention are described in the preferred embodiment of the invention. The dual-mode television 100 has a channel scanning system. Referring to Figure 1, the present invention is preferred. In the embodiment, a first demodulator U, a second demodulator 12, and a decoding Is 14 are provided. The multimedia media/ΓΓ100 can be demodulated to comply with the digital television terrestrial multimedia broadcast material (bribe-to-smoke _ _ just digital TV signal, therefore, the first broadcast = 201036439 12 controlled by the channel scanning system 13 The digital television standard selects a frequency point for demodulating the received digital television signal; the decoder (4) is an image and sound that is controlled by the channel scanning system 13 to decode the corresponding digital television signal. The channel scanning system 13 includes a switching module. A frequency setting module 131, a control module 132, and a program list generating module η], wherein the switching module is coupled to the first demodulator 11, the second demodulator 12, and the control module 132. A data transport stream (Transport Stream; TS for short) demodulated by the demodulator 11 or the second demodulator 12 is controlled by the control module 132. The frequency setting module 131 is configured to set the first demodulator. u and the scanning frequency points 4 and 4 required by the second demodulator 12, so that the first demodulator 11 and the second demodulator 12 can respectively demodulate the scanning frequency points according to the scanning frequency points 匕 and 匕, respectively. C and fn data transmission stream; and in the first demodulator After the demodulation of the second demodulator 12 is completed, the control module 132 controls the next frequency points of the first demodulator u and the second demodulator 12. +1 and fn+i. 132 is a control switching module 〇3〇 to obtain the data transmission stream demodulated by the first demodulator 11 and the first demodulator 12, and determine whether the data transmission stream exists or not—the data carrier controls the switching module 13 to output the data. The carrier and control frequency setting module 131 causes the first demodulator u and the second demodulator Η to scan the next frequency point. Then, the program list generating module 133 # is made by using the control carrier output. - after the program list, output to the decoder 14 to decode the corresponding image and sound. The control module 132 determines the data transmission stream to control the switching module 2010 201036439, then the control module 132 determines the first demodulation When both the device u and the data transmission stream generated by the device have a data carrier, the switching module 13 outputs the rotation of the data according to the acquisition time of each data transmission stream. θ * (4) Each Bellows transmission stream, if each data transmission = Take the __ person's heart - take the order - the demodulator U is the priority output.

2. When the control module U2 judges that each data transmission stream has only the output data carrier of the demodulation first demodulator u), the switching module=outputs the data transmission stream with the data carrier and does not output another data. Demodulating the data transmission stream of the first demodulator 12), and controlling the second demodulator to know the frequency-frequency point to obtain the data transmission stream of the next frequency point of the second demodulator 12. 3. When the control module 132 determines that the data transmission streams of the first demodulator 11 and the second demodulator 12 have no data carrier, the control demodulator U and the demodulator 12 are respectively scanned. The frequency is obtained to obtain the f-transfer stream of the first demodulator u and the second demodulator 12 down-frequency. > Referring to Figure 2, and in conjunction with the figure, the channel scanning method of the dual mode television of the present invention comprises the following steps: First, the control module 132 sets the first demodulator and the second demodulator 12 according to the scanning frequency thereof. The point demodulates the data transmission stream (step D), and then 'determines the data transmission stream according to a predetermined rule to control the switching module 13 to output a data carrier (step 23), and uses the data carrier to make a program list (step 24), then 'determine whether all the frequency points have been scanned (step 25)? If 201036439 is not completed' then control the frequency setting mode, group 131 scans the next frequency point (step 26), and continues step 2 until all the scans are completed The frequency is over. Referring to FIG. 3, the step 23 of the control module 132 for determining the data transport stream to control the switching module 130 includes the following sub-steps: The control module 132 depends on whether the data transport stream has a data carrier (step 201), which includes three cases. Each of the data transmission streams has a data carrier (step 202), and only the data buffer of the demodulator has a data carrier (step 206), and each data transmission stream has no data carrier (step 2〇9). The description is as follows: In conjunction with FIG. 2, _module, group 132 (4) each data transmission stream has a data carrier (step 2 〇 2), and then determine the acquisition time of each data transmission stream (step 203)? If not obtained at the same time, then The rules for obtaining the data transmission stream are sequentially rotated (steps), and the control switching module 13 outputs the data transmission stream (step 210), and if it is simultaneously obtained, the rules are output according to the predetermined order (step 205). The control switching module (10) outputs the data transfer stream (step 210) and continues the node j. In the case where only the data transmission stream of one of the demodulator has a data carrier (step 206), for the data transmission stream with the data carrier (step shift), the control switching module 130 outputs the data transmission stream (step 21) and continues. Node J does not output (step) for the data transmission stream without data carrier and connects to node II. When it is judged that each data transmission stream has no data carrier (step 2〇, the data transmission stream without data carrier is not output ((4) period) The node π is connected. In summary, the dual mode television method of the present invention fully utilizes the advantages of the channel scanning systems 13 and 11, 12 of the first and second demodulators, and determines whether the data carrier is output immediately by 201036439. The data carrier does not interrupt the first and second demodulators 11, 12 to scan the next frequency point, thereby improving the channel scanning rate of the dual mode television, so that the object of the present invention can be achieved. The present invention is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, that is, the simple scope of the patent application scope and invention description in the present invention. Efficiency changes and modifications within the scope of the present invention are still covered by the patent.] [Brief Description of the drawings

In a preferred embodiment of the present invention, the dual mode television has a channel sweeping system and related components of b; FIG. 2 is a flow chart, and BB 4 μ method; and _ illustrates the channel of the double chess television of the present invention Scanning Figure 3 is a flow chart of the steps. Description Judgment data transmission to control switching module 201036439 [Main component symbol description] 100... •...Dual mode TV 133....... Program list generation module 11............ First demodulator 14.. ....... decoder 12... •...second demodulator 21~26 - step 13... •...channel scanning system 201~210 step 130... •...switching module I, II ··.. · Node 131... • Frequency setting module 132... • Control module 10

Claims (1)

201036439 · VII. Patent application scope: 1 · The dual-core TV channel scanning system works with the “first demodulator and” the second demodulator, including: rate setting module, setting the first demodulator and The second demodulator sweeps the frequency point, so that the first demodulator and the second demodulator respectively demodulate the data streams of the scanning frequency points according to the respective #scanning frequency points; ' Ο The 〇-switching module is coupled to the first demodulator and the second demodulator, and is controlled to output a data transmission stream demodulated by the first demodulator or the second demodulator; and a control module Controlling the switching module to obtain the data transmission stream of the first demodulator and the first demodulation and demodulation, and determining whether the data transmission stream has a data carrier to control the switching module to output the data carrier and control The frequency setting module performs scanning of the next frequency point. Λ 2· According to the channel scanning system of the dual-mode television according to the fourth paragraph of the fourth patent scope, wherein the control module determines that each of the data transmission streams has the wave, according to the acquisition time of each data transmission stream The switching module outputs the data transmission streams successively, and if the acquisition times of the data transmission streams are the same, the output is sequentially performed in a predetermined order. 3. According to the scope of application for patent 篦彳@α & the channel scanning system of the dual-mode TV that is entitled to the first item, the first 'where' the control module judges that each data transmission stream has only its copper:: the data transmission stream has When the data carrier is used, the switching module is rotated and the data transmission stream of the bedding carrier is present.八有4. According to the application scope of the patent scope, item i of the dual-station TV channel scanning system 11 201036439 X where 'the control module judges (4) the data transmission stream does not have the data carrier>, 'control the first demodulator And the second demodulator respectively scans the points to obtain the data transmission stream of the first channel and the second frequency of the second demodulator. The channel of the dual-mode television described in 2 or 3 is scanned to form a program list of the program list. 5 · According to the scope of the patent application, the system is also included - the use of the generation module. The channel scanning system of the dual-mode television described in item 5 of the monthly profit range is in line with the "Digital Television Terrestrial Multimedia Broadcasting" which is incompatible with the "China Mobile Multimedia Broadcasting Standard". 7. A dual-mode television channel scanning method (a) 5 further defines a first demodulator and includes the following steps: The scanning frequency required by the second demodulator (4) determines whether the data transmission stream is present or not - the data carrier is controlled The secondary carrier is output and the frequency setting module is controlled to perform scanning of the down-frequency point of the first demodulator and the second modulator. The solution of the dual-mode television according to the seventh aspect of the Sf patent scope, wherein the step (c) comprises the following sub-steps: ^ (cl) determining that each of the data transmission streams has the data carrier When the data transmission stream is acquired according to the acquisition time, the data transmission is sequentially outputted. If the acquisition time of each of the material transmission streams is the same, the output is sequentially performed in a predetermined order. 9. According to the double item described in Item 7 of U Li H The channel scanning method of the mode TV 12 201036439, wherein the step (C) comprises the following sub-steps: (C2) determining that each of the data transmission streams is only one carrier in the bean, ie, ie, 10 according to the scope of the patent application. The method of Φ is the same as the channel scanning of the TV. The step (4) includes the following sub-steps: 谛撝方Ο The data transmission stream of each of the data transmission channels is not controlled by the demodulator and the second demodulator. " Buccal point data transmission stream. Describe the frequency-frequency point to obtain the next - I: According to the patent application scope 7, 8, or 9 field method, the following steps are also included: the channel sweep of the dual-mode television (c) uses the data carrier to make a program table. 13